CVE-2025-68344

Unspecified impact via signed sample-size comparison

Published Dec 24, 2025 · Updated Dec 24, 2025

Integer overflow in the ALSA WaveFront driver in Linux allows attackers to cause unspecified impact via crafted sample metadata. The wavefront_send_sample() function casts the unsigned 32-bit header->size value to int before comparing it with the device free-memory count, allowing large values to bypass the intended size check. The public Linux advisory does not state the reachable consequence or required privileges, and the affected path is confined to the WaveFront synthesizer driver.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the ALSA WaveFront driver in Linux allows attackers to cause unspecified impact via crafted sample metadata. The wavefront_send_sample() function casts the unsigned 32-bit header->size value to int before comparing it with the device free-memory count, allowing large values to bypass the intended size check. The public Linux advisory does not state the reachable consequence or required privileges, and the affected path is confined to the WaveFront synthesizer driver.

The record

CVE
CVE-2025-68344
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c4a13ba88594fd4a27292853e736c6b4349823d
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1823e08f76c68b9e1d26f6d5ef831b96f61a62a0
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5588b7c86effffa9bb55383a38800649d7b40778
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bca11de0a277b8baeb7d006f93b543c907b6e782
  5. Affected versionversion=2.6.12

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0c4a13ba88594fd4a27292853e736c6b4349823d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1823e08f76c68b9e1d26f6d5ef831b96f61a62a0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5588b7c86effffa9bb55383a38800649d7b40778; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bca11de0a277b8baeb7d006f93b543c907b6e782; version=2.6.12

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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